Let L and alpha be given.
Assume Ha.
Let p be given.
Assume H1: L alpha p.
We will prove ∃beta, ordinal beta ∃q : setprop, L beta q PNoLe alpha p beta q.
We use alpha to witness the existential quantifier.
Apply andI to the current goal.
An exact proof term for the current goal is Ha.
We use p to witness the existential quantifier.
Apply andI to the current goal.
An exact proof term for the current goal is H1.
Apply PNoLe_ref to the current goal.